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The recommended tool for installing Cloudera Enterprise

This download installs Cloudera Enterprise or Cloudera Express.

 

Cloudera Enterprise requires a license; however, when installing Cloudera Express you will have the option to unlock Cloudera Enterprise features for a free 60-day trial.

 

Once the trial has concluded, the Cloudera Enterprise features will be disabled until you obtain and upload a license.

 

Supported Operating Systems

 

Note: Mixed operating system type and version clusters are supported, however using the same version of the same operating system on all cluster hosts is strongly recommended.

Cloudera Manager supports the following 64-bit operating systems:

 

 

  • RHEL-compatible
    • Red Hat Enterprise Linux and CentOS, 64-bit (+ SELinux mode in available versions)
      • 5.7
      • 5.10
      • 6.4
      • 6.5
      • 6.6
      • 6.7
      • 7.1
      • 7.2
    • Oracle Enterprise Linux with default kernel and Unbreakable Enterprise Kernel, 64-bit
      • 5.7 (UEK R2)
      • 5.10
      • 5.11
      • 6.4 (UEK R2)
      • 6.5 (UEK R2, UEK R3)
      • 6.6 (UEK R3)
      • 6.7 (UEK R3)
      • 7.1
      • 7.2

     

    Important: Cloudera supports RHEL 7 with the following limitations:

     

     

  • SLES - SUSE Linux Enterprise Server 11, Service Pack 4, 64-bit is supported by CDH 5.7 and higher. Service Packs 2 and 3 are supported by CDH 5.0 through CDH 5.6. Service Pack 1 is notsupported by CDH 5, only by CDH 4. Hosts running Cloudera Manager Agents must use SUSE Linux Enterprise Software Development Kit 11 SP1.
  • Debian - Wheezy 7.0, 7.1, and 7.8, 64-bit. (Squeeze 6.0 is only supported by CDH 4.)
  • Ubuntu - Trusty 14.04 (LTS) and Precise 12.04 (LTS), 64-bit. (Lucid 10.04 is only supported by CDH 4.)

Note:

  • Cloudera Enterprise is supported on platforms with Security-Enhanced Linux (SELinux) enabled. Cloudera is not responsible for policy support nor policy enforcement. If you experience issues with SELinux, contact your OS provider.

 

 

Selected tab: SupportedOperatingSystems

Supported JDK Versions

 

The version of Oracle JDK supported by Cloudera Manager depends on the version of CDH being managed. The following table lists the JDK versions supported on a Cloudera Manager 5.7 cluster running the latest CDH 4 and CDH 5. For more information on supported JDK versions for previous versions of Cloudera Manager and CDH, see Compatibility.

 

Important: There is one exception to the minimum supported and recommended JDK versions listed below. If Oracle releases a security patch that affects server-side Java before the next minor release of Clouderaproducts, the Cloudera support policy covers customers using the patch

 

 

CDH Version Managed (Latest) Minimum Supported JDK Version Recommended JDK Version
CDH 5 1.7.0_55 1.7.0_67, 1.7.0_75, 1.7.0_80
1.8.0_31

Cloudera recommends that you not use JDK 1.8.0_40.

1.8.0_60
CDH 4 and CDH 5 1.7.0_55 1.7.0_67, 1.7.0_75, 1.7.0_80
1.8.0_31 1.8.0_60
CDH 4 1.6.0_31 1.7.0_80

 

 

Cloudera Manager can install Oracle JDK 1.7.0_67 during installation and upgrade. If you prefer to install the JDK yourself, follow the instructions in Java Development Kit Installation.

 

Selected tab: SupportedJDKVersions

The Cloudera Manager Admin Console, which you use to install, configure, manage, and monitor services, supports the following browsers:

  • Mozilla Firefox 24 and 31.
  • Google Chrome 36 and higher.
  • Internet Explorer 9 and higher. Internet Explorer 11 Native Mode.
  • Safari 5 and higher.
Selected tab: SupportedBrowsers

Cloudera Manager requires several databases. The Cloudera Manager Server stores information about configured services, role assignments, configuration history, commands, users, and running processes in a database of its own. You must also specify a database for the Activity Monitor and Reports Manager roles.

 

 

Important: When processes restart, the configuration for each of the services is redeployed using information that is saved in the Cloudera Manager database. If this information is not available, your cluster will not start or function correctly. You must therefore schedule and maintain regular backups of the Cloudera Manager database in order to recover the cluster in the event of the loss of this database.

 

 

The database you use must be configured to support UTF8 character set encoding. The embedded PostgreSQL database that is installed when you follow Installation Path A - Automated Installation by Cloudera Managerautomatically provides UTF8 encoding. If you install a custom database, you may need to enable UTF8 encoding. The commands for enabling UTF8 encoding are described in each database topic under Cloudera Manager and Managed Service Data Stores.

 

After installing a database, upgrade to the latest patch version and apply any other appropriate updates. Available updates may be specific to the operating system on which it is installed.

 

Cloudera Manager and its supporting services can use the following databases:

  • MariaDB 5.5
  • MySQL - 5.1, 5.5, 5.6, and 5.7
  • Oracle 11gR2 and 12c

    Note: When installing a JDBC driver, only the ojdbc6.jar file is supported for both Oracle 11g R2 and Oracle 12c; the ojdbc7.jarfile is not supported.

  • PostgreSQL - 8.1, 8.3, 8.4, 9.1, 9.2, 9.3, 9.4

 

Cloudera supports the shipped version of MariaDB, MySQL and PostgreSQL for each supported Linux distribution. Each database is supported for all components in Cloudera Manager and CDH subject to the notes in CDH 4 Supported Databases and CDH 5 Supported Databases.

Selected tab: SupportedDatabases

The following versions of CDH and managed services are supported:

Warning: Cloudera Manager 5 does not support CDH 3 and you cannot upgrade Cloudera Manager 4 to Cloudera Manager 5 if you have a cluster running CDH 3. Therefore, to upgrade CDH 3 clusters to CDH 4 using Cloudera Manager, you must use Cloudera Manager 4.

  • CDH 4 and CDH 5. The latest released versions of CDH 4 and CDH 5 are strongly recommended. For information on CDH 4 requirements, see CDH 4 Requirements and Supported Versions. For information on CDH 5 requirements, see CDH 5 Requirements and Supported Versions.
  • Cloudera Impala - Cloudera Impala is included with CDH 5. Cloudera Impala 1.2.1 with CDH 4.1.0 or later. For more information on Impala requirements with CDH 4, see Impala Requirements.
  • Cloudera Search - Cloudera Search is included with CDH 5. Cloudera Search 1.2.0 with CDH 4.6.0. For more information on Cloudera Search requirements with CDH 4, see Cloudera Search Requirements.
  • Apache Spark - 0.90 or later with CDH 4.4.0 or later.
  • Apache Accumulo - 1.4.3 with CDH 4.3.0, 1.4.4 with CDH 4.5.0, and 1.6.0 with CDH 4.6.0.

For more information, see the Product Compatibility Matrix.

Selected tab: SupportedCDHandManagedServiceVersions

The following components are supported by Transport Layer Security (TLS):

 

Table 1. Components Supported by TLS

Component

Role Port Version
Cloudera Manager Cloudera Manager Server 7182 TLS 1.2
Cloudera Manager Cloudera Manager Server 7183 TLS 1.2
Flume   9099 TLS 1.2
HBase Master 60010 TLS 1.2
HDFS NameNode 50470 TLS 1.2
HDFS Secondary NameNode 50495 TLS 1.2
Hive HiveServer2 10000 TLS 1.2
Hue Hue Server 8888 TLS 1.2
Cloudera Impala Impala Daemon 21000 TLS 1.2
Cloudera Impala Impala Daemon 21050 TLS 1.2
Cloudera Impala Impala Daemon 22000 TLS 1.2
Cloudera Impala Impala Daemon 25000 TLS 1.2
Cloudera Impala Impala StateStore 24000 TLS 1.2
Cloudera Impala Impala StateStore 25010 TLS 1.2
Cloudera Impala Impala Catalog Server 25020 TLS 1.2
Cloudera Impala Impala Catalog Server 26000 TLS 1.2
Oozie Oozie Server 11443 TLS 1.1
Solr Solr Server 8983 TLS 1.1
Solr Solr Server 8985 TLS 1.1
YARN ResourceManager 8090 TLS 1.2
YARN JobHistory Server 19890 TLS 1.2

 

To configure TLS security for the Cloudera Manager Server and Agents, see Configuring TLS Security for Cloudera Manager.

Selected tab: SupportedTransportLayerSecurityVersions

Cloudera Manager requires the following resources:

  • Disk Space
    • Cloudera Manager Server
      • 5 GB on the partition hosting /var.
      • 500 MB on the partition hosting /usr.
      • For parcels, the space required depends on the number of parcels you download to the Cloudera Manager Server and distribute to Agent hosts. You can download multiple parcels of the same product, of different versions and builds. If you are managing multiple clusters, only one parcel of a product/version/build/distribution is downloaded on the Cloudera Manager Server—not one per cluster. In the local parcel repository on the Cloudera Manager Server, the approximate sizes of the various parcels are as follows:
        • CDH 4.6 - 700 MB per parcel; CDH 5 (which includes Impala and Search) - 1.5 GB per parcel (packed), 2 GB per parcel (unpacked)
        • Cloudera Impala - 200 MB per parcel
        • Cloudera Search - 400 MB per parcel
    • Cloudera Management Service -The Host Monitor and Service Monitor databases are stored on the partition hosting/var. Ensure that you have at least 20 GB available on this partition.For more information, see Data Storage for Monitoring Data.
    • Agents - On Agent hosts each unpacked parcel requires about three times the space of the downloaded parcel on the Cloudera Manager Server. By default unpacked parcels are located in /opt/cloudera/parcels.
  • RAM - 4 GB is recommended for most cases and is required when using Oracle databases. 2 GB may be sufficient for non-Oracle deployments with fewer than 100 hosts. However, to run the Cloudera Manager Server on a machine with 2 GB of RAM, you must tune down its maximum heap size (by modifying -Xmx in /etc/default/cloudera-scm-server). Otherwise the kernel may kill the Server for consuming too much RAM.
  • Python - Cloudera Manager and CDH 4 require Python 2.4 or later, but Hue in CDH 5 and package installs of CDH 5 require Python 2.6 or 2.7. All supported operating systems include Python version 2.4 or later.
  • Perl - Cloudera Manager requires perl.
Selected tab: ResourceRequirements

The hosts in a Cloudera Manager deployment must satisfy the following networking and security requirements:

  • Cluster hosts must have a working network name resolution system and correctly formatted /etc/hosts file. All cluster hosts must have properly configured forward and reverse host resolution through DNS. The /etc/hosts files must
    • Contain consistent information about hostnames and IP addresses across all hosts
    • Not contain uppercase hostnames
    • Not contain duplicate IP addresses

    Also, do not use aliases, either in /etc/hosts or in configuring DNS. A properly formatted /etc/hosts file should be similar to the following example:

    127.0.0.1    localhost.localdomain   localhost
    192.168.1.1     cluster-01.example.com  cluster-01
    192.168.1.2     cluster-02.example.com  cluster-02
    192.168.1.3     cluster-03.example.com  cluster-03 
    
  • In most cases, the Cloudera Manager Server must have SSH access to the cluster hosts when you run the installation or upgrade wizard. You must log in using a root account or an account that has password-less sudo permission. For authentication during the installation and upgrade procedures, you must either enter the password or upload a public and private key pair for the root or sudo user account. If you want to use a public and private key pair, the public key must be installed on the cluster hosts before you use Cloudera Manager.

    Cloudera Manager uses SSH only during the initial install or upgrade. Once the cluster is set up, you can disable root SSH access or change the root password. Cloudera Manager does not save SSH credentials, and all credential information is discarded when the installation is complete. For more information, see Permission Requirements for Package-based Installations and Upgrades of CDH.

  • If single user mode is not enabled, the Cloudera Manager Agent runs as root so that it can make sure the required directories are created and that processes and files are owned by the appropriate user (for example, the hdfs and mapred users).
  • No blocking is done by Security-Enhanced Linux (SELinux).
    Note: Cloudera Enterprise is supported on platforms with Security-Enhanced Linux (SELinux) enabled. Cloudera is not responsible for policy support nor policy enforcement. If you experience issues with SELinux, contact your OS provider.
  • IPv6 must be disabled.
  • No blocking by iptables or firewalls; port 7180 must be open because it is used to access Cloudera Manager after installation. Cloudera Manager communicates using specific ports, which must be open.
  • For RHEL and CentOS, the /etc/sysconfig/network file on each host must contain the hostname you have just set (or verified) for that host.
  • Cloudera Manager and CDH use several user accounts and groups to complete their tasks. The set of user accounts and groups varies according to the components you choose to install. Do not delete these accounts or groups and do not modify their permissions and rights. Ensure that no existing systems prevent these accounts and groups from functioning. For example, if you have scripts that delete user accounts not in a whitelist, add these accounts to the list of permitted accounts. Cloudera Manager, CDH, and managed services create and use the following accounts and groups:
Table 2. Users and Groups

Component (Version)

Unix User ID Groups Notes
Cloudera Manager (all versions) cloudera-scm cloudera-scm Cloudera Manager processes such as the Cloudera Manager Server and the monitoring roles run as this user.
The Cloudera Manager keytab file must be named cmf.keytab since that name is hard-coded in Cloudera Manager.
Note: Applicable to clusters managed by Cloudera Manager only.
Apache Accumulo (Accumulo 1.4.3 and higher) accumulo accumulo Accumulo processes run as this user.
Apache Avro   No special users.
Apache Flume (CDH 4, CDH 5) flume flume The sink that writes to HDFS as this user must have write privileges.
Apache HBase (CDH 4, CDH 5) hbase hbase The Master and the RegionServer processes run as this user.
HDFS (CDH 4, CDH 5) hdfs hdfs, hadoop The NameNode and DataNodes run as this user, and the HDFS root directory as well as the directories used for edit logs should be owned by it.
Apache Hive (CDH 4, CDH 5) hive hive

The HiveServer2 process and the Hive Metastore processes run as this user.

A user must be defined for Hive access to its Metastore DB (e.g. MySQL or Postgres) but it can be any identifier and does not correspond to a Unix uid. This is javax.jdo.option.ConnectionUserName in hive-site.xml.

Apache HCatalog (CDH 4.2 and higher, CDH 5) hive hive

The WebHCat service (for REST access to Hive functionality) runs as the hive user.

HttpFS (CDH 4, CDH 5) httpfs httpfs

The HttpFS service runs as this user. See HttpFS Security Configuration for instructions on how to generate the merged httpfs-http.keytab file.

Hue (CDH 4, CDH 5) hue hue

Hue services run as this user.

Cloudera Impala (CDH 4.1 and higher, CDH 5) impala impala, hive Impala services run as this user.
Apache Kafka (Cloudera Distribution of Kafka 1.2.0) kafka kafka Kafka services run as this user.
Java KeyStore KMS (CDH 5.2.1 and higher) kms kms The Java KeyStore KMS service runs as this user.
Key Trustee KMS (CDH 5.3 and higher) kms kms The Key Trustee KMS service runs as this user.
Key Trustee Server (CDH 5.4 and higher) keytrustee keytrustee The Key Trustee Server service runs as this user.
Kudu kudu kudu Kudu services run as this user.
Llama (CDH 5) llama llama Llama runs as this user.
Apache Mahout   No special users.
MapReduce (CDH 4, CDH 5) mapred mapred, hadoop Without Kerberos, the JobTracker and tasks run as this user. The LinuxTaskController binary is owned by this user for Kerberos.
Apache Oozie (CDH 4, CDH 5) oozie oozie The Oozie service runs as this user.
Parquet   No special users.
Apache Pig   No special users.
Cloudera Search (CDH 4.3 and higher, CDH 5) solr solr The Solr processes run as this user.
Apache Spark (CDH 5) spark spark The Spark History Server process runs as this user.
Apache Sentry (incubating) (CDH 5.1 and higher) sentry sentry The Sentry service runs as this user.
Apache Sqoop (CDH 4, CDH 5) sqoop sqoop This user is only for the Sqoop1 Metastore, a configuration option that is not recommended.
Apache Sqoop2 (CDH 4.2 and higher, CDH 5) sqoop2 sqoop, sqoop2 The Sqoop2 service runs as this user.
Apache Whirr   No special users.
YARN (CDH 4, CDH 5) yarn yarn, hadoop Without Kerberos, all YARN services and applications run as this user. The LinuxContainerExecutor binary is owned by this user for Kerberos.
Apache ZooKeeper (CDH 4, CDH 5) zookeeper zookeeper The ZooKeeper processes run as this user. It is not configurable.
Selected tab: NetworkingandSecurityRequirements
Selected tab: SystemRequirements

Issues Fixed in Cloudera Manager 5.7.5

 

The following issue is fixed in Cloudera Manager 5.7.5.

 

 

OOMKiller script does not work for Impala Catalog

 

Fixed a bug where OutOfMemory errors in the Catalog Server might lead to killing multiple Java processes, including other roles on the same host.

 

 

Selected tab: WhatsNew

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